JP6136068B2 - Air battery and battery pack using the same - Google Patents

Description

  The present invention relates to an air battery and an assembled battery formed by electrically connecting the air battery to each other.

As a prior art related to this type of air battery, there is one described in Patent Document 1 under the name of “spare battery”.
The reserve battery described in Patent Document 1 is a dry component structure used in an electrochemical cell system, includes a plurality of dry components, includes a positive electrode and a negative electrode, and one end of the dry component structure has a condensed electrolyte solution. Having a reservoir, having a dry component structure, wherein liquid is added to the reservoir of condensed electrolyte, and electrolyte is introduced to the dry component through an electrolyte flow management structure, thereby between the positive and negative electrodes It causes an electrochemical reaction.
The frame portion suitable for fitting the positive electrode is formed by integrally forming an external portion and a central support portion that supports the positive electrode.

JP 2005-527069 A

However, in the spare battery described in Patent Document 1, the frame part suitable for fitting the positive electrode integrally forms the external part and the central support part.
The external part and the central support part are responsible for the mechanical strength of the external part, while the central support part has a function of supporting the positive electrode, but the external part and the central support part are integrally formed. Therefore, the central support portion also has excessive strength.

The present invention, such as by formed in the deformation preventing member separately from the outer frame, which respectively air battery is caused to share the different functions in the deformation preventing member and an outer frame obtained while the adjacent conducting air cells The purpose is to provide an assembled battery using the.

An air battery according to the present invention for solving the above-mentioned problems is formed as an outer frame body in which a positive electrode material and a negative electrode material are arranged to face each other so as to partition an electrolyte layer, and to be formed separately from the outer frame body And a deformation preventing member disposed on the electrolyte layer and contacting the positive electrode material and / or the negative electrode material to prevent deformation.
Furthermore, the deformation preventing member has a flow allowing portion that allows the electrolyte to flow on the surface that contacts the positive electrode material, and the flow allowing portion is formed on the surface that contacts the positive electrode material. A plurality of irregularities, and the irregularities are formed of an elastic material, or have a contact member for conducting contact with a current collector plate of another adjacent air battery, and the height of the contact member A contact fitting portion having a height substantially matching the height of the contact fitting portion is formed on the outer frame body, and the deformation preventing member has a surface that contacts the positive electrode material mounted on the contact member of the contact fitting portion. A large number of concave and convex grooves for ventilation, which are formed higher than the surface to be placed, or an elastic lip member is disposed on the surface of the deformation preventing member that contacts the negative electrode material, or for venting the positive electrode material A liquid-tight air-permeable membrane formed on the outer surface is provided, and the deformation preventing member is formed in a square shape. A plurality of cross-linking materials are arranged in the material at predetermined intervals, and the frame member of the deformation prevention member and the cross-linking material are arranged so as not to overlap each other in the direction adjacent to the convex portion of the air-grooving groove. ing.
In the structure of these, by forming a deformation preventing member and the outer frame separately, are each allowed to share a different function to prevent deformation member and the outer frame member when are adjacent conducting air cells .

  An assembled battery according to the present invention for solving the above-described problems is one in which the above-described air batteries are electrically connected to each other.

  According to the present invention, by forming the outer frame and the deformation preventing member separately, the outer frame and the deformation preventing member when the air battery is adjacently conducted can share different functions.

It is sectional drawing of the assembled battery using the air battery which concerns on 1st embodiment of this invention. It is sectional drawing when inject | pouring electrolyte solution into an air battery same as the above. (A) is a plane sectional view of an outer frame body and a deformation preventing member forming a part of the air battery according to the first embodiment of the present invention, and (B) is along the line II shown in (A). It is sectional drawing. (A) is a cross-sectional plan view of an outer frame body and a deformation preventing member forming a part of an air battery according to the second embodiment of the present invention, and (B) is along the line II-II shown in (A). It is sectional drawing. (A) is sectional drawing of the outer frame and deformation | transformation prevention member which make a part of air battery which concerns on 3rd embodiment of this invention, (B) is the air battery which concerns on 4th embodiment of this invention. It is sectional drawing of the outer frame body which makes a part of, and a deformation | transformation prevention member. (A) is a front sectional view of the air battery according to the fifth embodiment of the present invention, and (B) is a front sectional view showing the operation of the air battery shown in (A). It is a front sectional view of an air battery according to a sixth embodiment of the present invention. (A) is a front sectional view of an air battery according to a seventh embodiment of the present invention, and (B) is a partially enlarged view of a portion indicated by an encircling line III in (A). (A) is a front sectional view of an air battery according to an eighth embodiment of the present invention, and (B) is a plan view of a deformation preventing member. (A) is a front sectional view of an air battery according to a ninth embodiment of the present invention, and (B) is a plan view of a deformation preventing member. (A) is a plan view of a deformation preventing member according to another example, (B) is an enlarged view of a portion indicated by a surrounding line V in (A), and (C) is a partially enlarged perspective view showing the structure thereof. .

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings. FIG. 1 is a cross-sectional view of an assembled battery using an air battery according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing a state when an electrolyte is injected into the air battery, and FIG. ) Is a cross-sectional plan view of the outer frame body and the deformation preventing member constituting a part of the air battery according to the first embodiment of the present invention, and (B) is a cross-sectional view taken along the line II shown in (A). It is. In FIG. 3 and FIGS. 4 to 10 shown below, the outer frame body and the like are shown in a horizontal state.

As shown in FIG. 1, an assembled battery A according to an example of the present invention is a case in which four air batteries B <b> 1...
As shown in FIG. 1, “adjacent conduction” includes not only the form in which contact is made in the left-right direction but also the form of being stacked vertically.
Among the air batteries B1..., The air battery B1 arranged on the outermost left side is provided with a current collector plate 41 via a current collector 40, and the air battery B1 arranged on the outermost right side is provided with a current collector 40. The current collecting plates 42 are in conductive contact with each other.
The above-described air cells B1... Are assembled with a compressive load applied in the direction indicated by the arrow F, and are fastened by bolts 9 and 9 via current collector plates 41 and 42 described below. Hereinafter, the compression load is indicated by F.

  The current collector plates 41 and 42 are each formed of a conductive metal plate material, and the inner side surfaces thereof are brought into conductive contact with the current collectors 40 and 40 disposed on the left and right outermost sides, and Each outer end part is projected outside from the cover plate 7 of the case 5 described below. As a result, the power of the air batteries B1... Can be taken out of the case 5 through the current collecting plates 41 and 42.

The case 5 has a main body 6 and lid plates 7 and 8 that close the upper and lower openings of the main body 6.
The main body 6 has an internal volume having a gap a serving as an air flow path for circulating air around the air batteries B1... That are adjacently connected to each other, and has a height that can accommodate the air batteries B1. Is formed.

In the lid plate 7 of the main body 6, an air inflow port 7 b is formed near the upper side of the current collector plate 41, and an air outflow port 7 c is formed near the upper side of the current collector plate 42.
That is, the air flowing in from the air inlet 7b flows through the case 5 and then flows out from the air outlet 7c.

  The air battery B1 according to the first embodiment of the present invention includes an outer frame body 10, a deformation preventing member 50, a contact member 15, a positive electrode component 20, an electrolyte layer S, a separator 30, a negative electrode material 35, and the above-described current collector. The body 40 is configured.

  The outer frame body 10 shown in the present embodiment shares the compression load F mainly acting on the air cells B1 that are electrically connected adjacent to each other, and includes the short frame members 10a and 10a and the long frame members 10b and 10b (see FIG. 3), the left and right sides are opened and formed as a rectangular frame in side view.

Among the short frame members 10a, 10a, the short frame member 10a on the upper side of the figure has an injection / drainage hole 10f for injecting and draining the electrolyte W at the position facing the electrolyte layer S to be described later. Is formed.
Contact fitting portions 10c and 10c are formed on the inner surfaces of the left side portions of the short frame members 10a and 10a. The contact fitting portions 10c and 10c are steps having dimensions substantially matching the width of the contact member 15.
A pump P is connected to the injection drain hole 10f through a tube 60 such as Teflon shown in FIG. 2 with the cover plate 7 removed. The electrolytic solution tank T is connected.
In this configuration, by operating the pump P, the electrolytic solution W is injected into each air battery B1, and the electrolytic solution W can be discharged into the electrolytic solution tank T.
The “electrolytic solution” is an aqueous solution or a non-aqueous solution mainly containing KOH or chloride.

  The deformation preventing member 50 is disposed on the electrolyte layer S (see FIGS. 1 and 2), and is for contacting the positive electrode material 22 and / or the negative electrode material 35 to prevent deformation. It is formed separately from the frame body 10.

  The deformation preventing member 50 is formed to have a size that can be accommodated in the outer frame body 10, and includes a frame member 51 that is rectangular in a plan view and a longitudinal direction of the frame member 51, as shown in FIG. 3. In this structure, three cross-linking materials 52 arranged at predetermined intervals along the direction are arranged. Of course, the cross-linking material 52 is not limited to three, and may be four or more or two or less as required.

  The cross-linking materials 52 are arranged so as not to be orthogonal to the injection direction of the electrolyte injected from the outside. In the present embodiment, the long frame members 51a and 51a are installed extending in parallel with the electrolyte injection direction.

The three cross-linking materials 52 are formed at a predetermined interval and are integrally cross-linked between the long frame members 51a and 51a, and the space surrounded by the frame material 51 by these cross-linking materials 52 is divided into four. The two electrolyte spaces S2 to S5 (see FIG. 3) are partitioned.
Further, by forming the entire length of the long frame members 51a and 51a shorter than the dimension between the inner wall surfaces of the short frame members 10a and 10a, the electrolyte solution is also provided between the short frame members 51b and 51b and the short frame members 10a and 10a. Spaces S1 and S6 are defined.
The thickness of the bridging material 52, the long frame materials 51a and 51a, and the short frame materials 51b and 51b is substantially matched with the thickness t (see FIG. 1) of the electrolyte layer S.
The above-mentioned “electrolytic solution spaces S1 to S6” are spaces for retaining the injected electrolytic solution.

  In the present embodiment, the frame material 51 and the cross-linking material 52 are in contact with the positive electrode material 22 and indirectly in contact with the negative electrode material 35 through the separator 30. Of course, it may be in the form of directly contacting the negative electrode material 35 without using the separator 30.

The contact member 15 is made of metal having conductivity, and is connected to each of the following liquid-tight gas-permeable membrane 21 and the positive electrode material 22 and is a current collector of another air battery B1 adjacent on the left and right sides in the figure. 40 for conducting contact.
The contact member 15 of the air battery B1 disposed on the leftmost side is in contact with and connected to the current collector plate 41 via the current collector 40, and the contact member of the air battery B1 disposed on the rightmost side. 15 is in contact with the current collector plate 42 via the current collector 40 and is conductively connected.

The contact member 15 shown in the present embodiment is formed as a plate-like body sized to fit into the contact fitting portion 10c, and when the contact member 15 is fitted into the contact fitting portion 10c, the short frame member 10a. The upper end surface 10d is formed to be flush with the upper end surface 10d.
Further, when a deformable metal material such as a silver paste is used for the contact member 15, the contact member 15 is disposed so as to be slightly higher than the height that is flush with the upper end surface 10d of the short frame member 10a. Then, the contact member 15 and the upper end surface 10d of the short frame member 10a may have the same height due to the compression load P at the time of lamination.

The positive electrode component 20 shown in this embodiment includes a liquid-tight gas permeable membrane 21 and a positive electrode material 22.
The positive electrode component 20 is a conductive layer formed of, for example, carbon powder for forming a catalyst for conducting an oxygen reduction reaction with the positive electrode material 22 or a conductive path, and for forming the catalyst or carbon powder as a layer. Includes binders and the like.

  The liquid-tight air-permeable membrane 21 has liquid-tight air permeability, and a large number of fine holes for supplying gas (air) to the positive electrode material 22 are formed, and the electrolyte does not leak to the outside. It is made of fluororesin.

  The liquid-tight gas permeable membrane 21 shown in the present embodiment is formed in a rectangular shape in plan view that matches the contour surrounded by the contact member 15 and the long frame members 10b and 10b. In other words, it is formed so as to cover the outer surface 22a of the positive electrode material 22 described below.

  The positive electrode material 22 is formed of a conductive and porous material containing a catalyst. For example, the positive electrode material 22 is formed of a carbon material and a binder resin, and a catalyst such as manganese dioxide is included in the multi-conductive porous body. It is what.

The separator 30 is for separating the positive electrode material 22 and the negative electrode material 35 described above.
The negative electrode material 35 is made of, for example, a pure metal or alloy of Li, Al, Fe, Zn, and Mg.
The current collector 40 is made of a conductive mesh material and has a function also serving as an air flow path through the air battery B1. Specifically, stainless steel, copper (alloy), and the like.

By the way, the outer frame body 10 and the deformation prevention member 50 are configured as follows so that the outer frame body 10 and the deformation prevention member 50 can share the following functions (a) and (b). It can be a combination of materials.
(A) The outer frame body 10 is assigned the above-described compressive force, and the deformation preventing member 50 is assigned the function of holding the positive and negative electrode materials 22 and 35 and the electrolytic solution.
(B) The deformation preventing member 50 is assigned the above-described compressive force, and the outer frame body 10 is assigned the function of holding the positive and negative electrode materials 22 and 35 and the electrolytic solution.

In this case, the deformation preventing member 50 and the materials (1) to (3) of the outer frame body 10 can be combined as follows.
(1) Metals such as SUS304, cast iron, brass, Inconel (2) Plastic (PP (polypropylene), PE (polyethylene), resin such as urethane, Teflon, etc.) (3) Rubber (natural rubber, silicone rubber, chloroprene rubber (neoprene) Elastic material such as
Pattern 1 ... (1) as the deformation prevention member 50, (2) or (3) in combination as the outer frame 10 Pattern 2 (2) as the deformation prevention member 50, (1) or (3) as the outer frame 10 Combination 3 of (3) as the deformation preventing member 50 and (1) or (2) as the outer frame 10

According to air battery B1 which consists of the above composition, the following effect can be acquired.
When a plurality of air batteries B1 are stacked by the outer frame body 10 and the deformation preventing member 50, the deformation of the electrolyte layer S and the like due to the compression load F described above is suppressed, and a space for filling the electrolyte is secured. Can do.

  Since the outer frame body 10 and the deformation preventing member 50 are formed separately, the materials of the outer frame body 10 and the deformation preventing member 50 can be selected in accordance with the function of sharing. For example, the outer frame 10 supports the compressive force F acting on the air battery B1 conducted adjacent to each other, and the compression force F acting on the air battery B1 conducted adjacent to each other is shared as the deformation preventing member 50. For example, a material that is light enough to prevent deformation of the electrolyte layer S can be used.

Since the cross-linking material 52 is formed so as to extend in parallel with the injection direction of the electrolytic solution, the electrolytic solution injected from the outside can be favorably diffused throughout the electrolytic solution spaces S1 to S6. That is, the electrolyte solution W can be effectively diffused and the startup after the electrolyte solution can be promptly performed.
Since the current collector 40 has a function as an air flow path through which the air battery B1 is circulated, the current collector 40 can be made compact.

  Next, an air battery according to a second embodiment of the present invention will be described with reference to FIG. FIG. 4 (A) is a cross-sectional plan view of an outer frame body and a deformation preventing member forming part of an air battery according to the second embodiment of the present invention, and FIG. 4 (B) is a II-II line shown in FIG. 4 (A). FIG. In addition, about the thing equivalent to what was demonstrated in embodiment mentioned above, the code | symbol same as them is attached | subjected, description is abbreviate | omitted, and positive electrode material 22 grade | etc., Was removed in order to specify the flow permission part R Shown in state.

The air battery B2 according to the second embodiment of the present invention employs a deformation preventing member 50A different from the deformation preventing member 50 described above.
The deformation preventing member 50A is a flow that allows the electrolyte solution to flow on the contact surface (the upper surface in the drawing) of the short frame material 51b of the deformation preventing member 50 and the positive electrode material 22 of the cross-linking material 52 described above. The allowable portion R is formed.
The flow allowing portion R shown in the present embodiment has a large number of irregularities 50a. Instead of the unevenness 50a, a structure in which a plurality of flow paths are formed may be used.

  According to the air battery B2 according to the present embodiment, the electrolytic solution can be diffused also to the interface between the deformation preventing member 50A and the positive electrode material 22 through the unevenness 50a, thereby contacting the deformation preventing member 50A. Even if the positive electrode material 22 is present, a sufficient reaction can be performed, so that power generation performance can be improved.

  Next, an air battery according to a third embodiment of the present invention will be described with reference to FIG. FIG. 5A is a cross-sectional view of an outer frame body and a deformation preventing member forming a part of an air battery according to the third embodiment of the present invention, and FIG. 5B is a fourth embodiment of the present invention. It is sectional drawing of the outer frame body and deformation prevention member which make a part of air battery. In addition, about the thing equivalent to what was demonstrated in each embodiment mentioned above, the code | symbol same as them is attached | subjected, description is abbreviate | omitted, and it has shown in the state which removed the positive electrode material 22 grade | etc.,.

The air battery B3 according to the third embodiment of the present invention employs a deformation preventing member 50B different from the deformation preventing member 50 described above.
When the deformation preventing member 50B is placed on the separator 30, the upper surface 50b is set to a thickness T such that the upper surface 50b protrudes upward in the figure by a required dimension t1 from the bottom wall surface 10e of the contact fitting portion 10c. Is.

In this configuration, when the positive electrode material 22 (not shown) is arranged in the outer frame 10 when the air battery B3 is assembled, the positive electrode material 22 and the negative electrode material 35 are pressed against each other by the deformation preventing member 50B, and contact resistance Can be reduced.
In addition, what is necessary is just to set the above-mentioned thickness T so that it may become an appropriate press state.

The air battery B4 according to the fourth embodiment of the present invention shown in FIG. 4B employs a deformation preventing member 50C different from the deformation preventing member 50 described above.
That is, the air battery B4 has a configuration in which the deformation preventing member 50C is directly placed on the negative electrode material 35 disposed in the outer frame body 10A according to another example.
The outer frame body 10A has a configuration in which the contact fitting portion formed on the short frame material 10a of the outer frame body 10 is eliminated.
The deformation preventing member 50C has a structure in which a frame member 51 ′ having a rectangular shape in plan view and a single cross-linking member 52 ′ are arranged in the frame member 51 ′.

In the case of this configuration, the upper surface 50b of the deformation preventing member 50C placed on the negative electrode member 35 protrudes upward in the figure by a required dimension t1 from the upper end surface 10d of the outer frame body 10A. A thickness T1 is set.
In the air battery B4 according to the present embodiment, the separator 30 described above is disposed on the upper surface 50b side of the deformation preventing member 50C.

  Next, an air battery according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 6A is a front sectional view of an air battery according to the fifth embodiment of the present invention, and FIG. 6B is a front sectional view showing the operation of the air battery shown in FIG. In addition, about the thing equivalent to what was demonstrated in each embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The air battery B5 according to the fifth embodiment of the present invention is obtained by forming a deformation preventing member 50D having the same configuration as the above-described deformation preventing member 50 with an elastic material such as rubber.
Such a deformation preventing member 50D is incorporated in the outer frame 10 in a compressed state within a load range in which the deformation preventing member 50D is elastically deformed.

When the deformation preventing member 50D is compressed within the load range for elastic deformation and incorporated into the outer frame body 10, as shown in FIG. It is possible to prevent the deformation preventing member 50D from being elastically deformed with the wear and to generate a gap between the deformation preventing member 50D and the negative electrode material 35.
That is, by preventing the gap from being generated, it is possible to prevent the air battery itself from being deformed by the stacking load between the air batteries B5. In addition, the arrow shown in the figure (B) has shown the deformation | transformation direction of the deformation | transformation prevention member 50D.

  An air battery according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a front sectional view of an air battery according to the sixth embodiment of the present invention, in which the positive electrode material 22 and the like are removed in order to clearly show the flow permission portion R. In addition, about the thing equivalent to what was demonstrated in each embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The air battery B6 according to the sixth embodiment of the present invention uses a deformation preventing member 50E different from the above.
The deformation preventing member 50E has the same configuration as the deformation preventing member 50 described above, but on the contact surface (the upper surface in the drawing) of the short frame material 51b and each positive electrode material 22 (not shown) of the bridging material 52, The difference is that a flow allowing portion R is provided which is provided with a plurality of irregularities 50b made of an elastic material such as rubber that allows the electrolyte to flow on the contact surface.

According to the air battery B6 shown in the present embodiment, the electrolytic solution can be diffused also to the interface between the deformation preventing member 50E and the positive electrode material 22 (not shown) through the unevenness 50b, thereby the deformation preventing member 50E. Even in the portion of the positive electrode material 22 that is in contact with the substrate, a sufficient reaction can be performed, so that the power generation performance can be improved.
Moreover, since the unevenness | corrugation 50b is formed with the elastic material, it is effective in reduction of the contact resistance between air battery B6.

  An air battery according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 8A is a front sectional view of an air battery according to the seventh embodiment of the present invention, and FIG. 8B is a partially enlarged view of a portion indicated by an envelope III in FIG. In addition, about the thing equivalent to what was demonstrated in embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The air battery B7 according to the seventh embodiment of the present invention uses a deformation preventing member 50F different from the above.
The deformation preventing member 50F has the same configuration as the deformation preventing member 50 described above, but has a structure in which an elastic lip member 53 is disposed on each lower surface of the short frame material 51b and the bridging material 52.

As shown in the present embodiment, when the elastic lip member 53 is disposed on the lower surfaces of the short frame member 51b and the bridging material 52, the separator 30 is disposed on the upper surface of the deformation preventing member 50D.
That is, when the elastic lip member 53 is disposed on each lower surface of the short frame member 51b and the bridging material 52, if the elastic lip member 53 is disposed on the positive electrode material 22 side, the positive electrode catalyst layer may be damaged. For this reason, it is preferable to arrange the separator 30 on the negative electrode material 35 side. The height of the elastic lip member 53 and the crushing allowance during compression are set according to the thickness of the metal forming the negative electrode material 35.

  In addition, you may form several above-mentioned unevenness | corrugation 50a (refer FIG. 8 (B)) as each flow-permitted part R on each upper surface of the short frame material 51b and the bridge | crosslinking material 52. FIG. Moreover, hydrophilicity can be given to those unevenness | corrugation 50a, and it can make it easy to osmose | permeate electrolyte solution. Furthermore, instead of the irregularities 50a, the irregularities 50b made of an elastic material such as rubber may be provided.

  An air battery according to an eighth embodiment of the present invention will be described with reference to FIG. FIG. 9A is a front sectional view of an air battery according to the eighth embodiment of the present invention, and FIG. 9B is a plan view of a deformation preventing member. In addition, about the thing equivalent to what was demonstrated in each embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted. In FIG. 8A, the separator and the positive electrode material are omitted.

The air battery B8 according to the eighth embodiment of the present invention uses a deformation preventing member 50G having a structure different from that described above.
The deformation preventing member 50G has the same structure as the deformation preventing member 50 described above, but has a structure in which two reinforcing members 54 and 54 are installed between the short frame members 51b and 51b with the bridging material 52 penetrating. Is different.
The reinforcing member 54 is a bar having a diameter smaller than the thickness T2 of the short frame members 51b and 51b and the long frame members 51a and 51b.

According to this configuration, the rigidity of the deformation preventing member 50G itself can be increased, and the thickness T2 of the deformation preventing member 50G can be reduced. This is advantageous in reducing the size of the air battery B8.
Further, the deformation preventing member 50G can be easily arranged in the outer frame body 10, and the unevenness 50b is formed on the upper surface of the bridging material 52 or the short frame material 51b, so It is possible to prevent the electrolyte diffusibility from being lowered in the portion.

  The air battery according to the ninth embodiment of the present invention will be described with reference to FIG. FIG. 10A is an exploded plan view showing a relative relationship between the liquid-tight gas permeable membrane and the deformation preventing member according to another example, and FIG. 10B is a front view of the air battery according to the ninth embodiment of the present invention. It is sectional drawing. In addition, about the thing equivalent to what was demonstrated in each embodiment mentioned above, the code | symbol same as them is attached | subjected and description is abbreviate | omitted.

The air battery B9 according to the ninth embodiment of the present invention is different in that a liquid-tight air permeable membrane 21A different from the above and a deformation preventing member 50H are used.
The liquid-tight air-permeable membrane 21A has liquid-tight air permeability. However, the liquid-tight air-permeable membrane 21A is formed on the outer surface with a large number of air-growing concave and convex grooves 21a for supplying gas (air) to the positive electrode material 22. It is different from the film 21.

  The deformation preventing member 50H is formed to have a size that can be accommodated in the outer frame body 10, and is formed by combining the short frame members 51d and 51d and the long frame members 51c and 51c (one is not shown) into a rectangular shape in plan view. Frame material 51A, and a structure having a cross-linking material 52A arranged at a position that bisects the frame material 51 in the longitudinal direction.

The liquid-tight gas-permeable membrane 21A and the deformation preventing member 50H include a convex portion 21b (indicated by a surrounding line IV) of the air-grooving groove 21a when the deformation preventing member 50H is disposed in the outer frame 10. In short, the short frame material 51d and the cross-linking material 52A are arranged so as not to overlap in the adjacent direction. Specifically, in a plan view, the positional relationship is such that the short frame material 51d and the bridging material 52A overlap the recess 21c.
In addition, the width | variety of the convex part 21b and the width | variety of the short frame material 51d and 52 A of bridge | crosslinking materials are mutually equivalent as shown in FIG.9 (B).

  As a result, when the air batteries B9 are connected to each other adjacently, the convex portion 21b does not press the short frame material 51d and the bridging material 52A. Can be prevented from being deformed. Further, it is possible to prevent the performance stability from being deteriorated due to the damage of the positive electrode material 22 due to the deformation or the distribution variation of the plurality of formed uneven grooves 21a for ventilation.

  A deformation preventing member according to another example will be described with reference to FIGS. 11A is a plan view of a deformation preventing member according to another example, FIG. 11B is an enlarged view of a portion indicated by an encircling line V in FIG. 11A, and FIG. 11C is a partially enlarged perspective view showing the structure thereof. It is.

  The deformation preventing member 50I according to another example is tilted at an angle of about 45 ° with respect to the injection direction α of the electrolyte in a rectangular frame 55 and is obliquely crossed at an angle of about 90 °. , 57 are stretched. Reference numeral 58 denotes a diamond-shaped empty portion defined by the mesh lines 56 and 57.

Further, as shown in FIGS. 2B and 2C, the mesh line 57 of the mesh lines 56 and 57 is provided with a single ridge line 57a along the extending direction thereof.
By projecting a single ridge line 57a along the extending direction of the mesh wire 57, the contact area with the positive electrode material 22 can be reduced, and the positive electrode material in contact with the deformation preventing member 50I. Even if it is 22 parts, sufficient reaction can be performed, so that power generation performance can be improved.
As described above, the ridge line 57 a is not limited to the mesh line 57, and the same ridge line may be projected to the mesh line 56, and the ridge line is projected to both the mesh lines 56 and 57. You may make it do.

  According to such a deformation preventing member 50I, since the mesh lines 56 and 57 are inclined at an angle of about 45 ° with respect to the electrolyte injection direction α, the resistance when the electrolyte is injected is reduced. Can do. Thereby, diffusion of electrolyte solution can be performed rapidly.

Although described in detail above, in any case, each configuration described in each of the above embodiments is not limited to being applied only to each of the above embodiments, and the configuration described in one embodiment is not limited to other embodiments. It can be applied mutatis mutandis or applied to the form, and can be arbitrarily combined.

10 Outer frame 10c Contact fitting portion 10d Surface to be placed (bottom wall surface)
15 Contact members 21, 21A Liquid tight gas permeable membrane 21a Venting concave / convex groove 21b Protruding portion 22 Positive electrode material 35 Negative electrode material 50, 50A-50I Deformation preventing members 50a, 50b Concavity / convexity 53 Elastic lip member 54 Reinforcement member 51 Frame members 52, 52A Material A Battery pack B1 to B9 Air battery R Flow allowable part S Electrolyte layer

Claims (13)

In an air battery used as an assembled battery adjacent to each other,
An outer frame body in which the positive electrode material and the negative electrode material are arranged to face each other so as to partition the electrolyte layer;
Together are formed in the outer frame and another member, it is disposed on the electrolyte layer, and possess a deformation preventing member for preventing the contact with deformed cathode material or the anode material or both thereof,
The deformation preventing member has a flow-permitting portion that allows the electrolyte to flow on the surface that contacts the positive electrode material.
The flow allowing portion is a plurality of irregularities formed on the surface in contact with the positive electrode material,
An air battery characterized in that the irregularities are formed of an elastic material . In an air battery used as an assembled battery adjacent to each other,
An outer frame body in which the positive electrode material and the negative electrode material are arranged to face each other so as to partition the electrolyte layer;
A deformation preventing member that is formed separately from the outer frame body, is disposed in the electrolyte layer, and is in contact with the positive electrode material or the negative electrode material or both to prevent deformation;
A contact member for conducting contact with a current collector plate of another adjacent air battery;
A contact fitting portion having a height difference substantially equal to the height of the contact member is formed on the outer frame body,
The deformation preventing member is formed such that the surface that contacts the positive electrode material is higher than the surface on which the contact member of the contact fitting portion is placed.
An air battery characterized by that . In an air battery used as an assembled battery adjacent to each other,
An outer frame body in which the positive electrode material and the negative electrode material are arranged to face each other so as to partition the electrolyte layer;
A deformation preventing member that is formed separately from the outer frame body, is disposed in the electrolyte layer, and is in contact with the positive electrode material or the negative electrode material or both to prevent deformation;
An elastic lip member is disposed on the surface of the deformation preventing member that contacts the negative electrode material.
An air battery characterized by that . In an air battery used as an assembled battery adjacent to each other,
An outer frame body in which the positive electrode material and the negative electrode material are arranged to face each other so as to partition the electrolyte layer;
A deformation preventing member that is formed separately from the outer frame body, is disposed in the electrolyte layer, and is in contact with the positive electrode material or the negative electrode material or both to prevent deformation;
A liquid-tight air-permeable membrane having a large number of air-grooving grooves for venting the positive electrode material is provided on the outer surface,
The deformation preventing member is formed by arranging a plurality of cross-linking materials in a rectangular frame member at predetermined intervals, and the frame member and the cross-linking material of the deformation preventing member are arranged in the direction adjacent to the convex portion of the ventilation groove. Are arranged so as not to overlap each other
An air battery characterized by that . The air according to any one of claims 2 to 4, wherein the deformation preventing member is formed with a flow allowing portion that allows the electrolyte to flow on a surface thereof in contact with the positive electrode material. battery. The deformation preventing member has a flow-permitting portion that allows the electrolyte to flow on the surface that contacts the positive electrode material.
The flow allowing portion is a plurality of irregularities formed on the surface that abuts on the positive electrode material.
The air battery according to any one of claims 2 to 4, wherein The deformation preventing member has a flow-permitting portion that allows the electrolyte to flow on the surface that contacts the positive electrode material.
The flow allowing portion is a plurality of irregularities formed on the surface in contact with the positive electrode material,
Concavities and convexities are made of elastic material
The air battery according to any one of claims 2 to 4, wherein A contact member for conducting contact with a current collector plate of another adjacent air battery;
A contact fitting portion having a height difference substantially equal to the height of the contact member is formed on the outer frame body,
The deformation preventing member is formed such that the surface that contacts the positive electrode material is higher than the surface on which the contact member of the contact fitting portion is placed.
The air battery according to any one of claims 1, 3, and 4. The air battery according to any one of claims 1 to 4, wherein the deformation preventing member is formed of an elastic material. The air battery according to any one of claims 1, 2, and 4, wherein an elastic lip member is disposed on a surface of the deformation preventing member that contacts the negative electrode material. The air battery according to any one of claims 1 to 4, wherein the deformation preventing member is provided with a reinforcing member for improving the rigidity thereof. A liquid-tight air-permeable membrane having a large number of air-grooving grooves for venting the positive electrode material is provided on the outer surface,
The deformation preventing member is formed by arranging a plurality of cross-linking materials in a rectangular frame member at predetermined intervals, and the frame member and the cross-linking material of the deformation preventing member are arranged in the direction adjacent to the convex portion of the ventilation groove. Are arranged so as not to overlap each other
The air battery according to any one of claims 1 to 3, wherein: Battery pack, characterized in that adjacent conductive is not mutually air battery according to any one of claims 1 to 12.

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